JP3854930B2 - Centralized management authentication apparatus and wireless terminal authentication method - Google Patents

Centralized management authentication apparatus and wireless terminal authentication method Download PDF

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Publication number
JP3854930B2
JP3854930B2 JP2003022039A JP2003022039A JP3854930B2 JP 3854930 B2 JP3854930 B2 JP 3854930B2 JP 2003022039 A JP2003022039 A JP 2003022039A JP 2003022039 A JP2003022039 A JP 2003022039A JP 3854930 B2 JP3854930 B2 JP 3854930B2
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Japan
Prior art keywords
authentication
wireless
wireless terminal
information
network
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JP2004266331A (en
Inventor
智大 岩間
義一 石井
勉 鬼頭
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松下電器産業株式会社
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/08Network architectures or network communication protocols for network security for supporting authentication of entities communicating through a packet data network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/10Network architectures or network communication protocols for network security for controlling access to network resources
    • H04L63/107Network architectures or network communication protocols for network security for controlling access to network resources wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/06Authentication
    • H04W12/0602Pre-authentication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/005Context aware security
    • H04W12/00503Location or proximity aware, e.g. using proximity to other devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
    • H04W12/04Key management, e.g. by generic bootstrapping architecture [GBA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data session or connection
    • H04W36/0016Control or signalling for completing the hand-off for data session or connection for hand-off preparation

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a unified management authentication apparatus and a wireless terminal authentication method for performing authentication of a wireless terminal so that the wireless terminal can roam between different wireless networks such as a cellular wireless network and a wireless local area network.
[0002]
[Prior art]
Conventionally, wireless communication systems in practical use can be roughly divided into two groups. One is a cellular wireless network represented by GSM (Global System for Mobile communications) and PDC (Personal Digital Cellular), and the other is a wireless local area network represented by IEEE802.11a / b and HyperLAN2 (hereinafter referred to as the following). A wireless LAN network).
[0003]
A cellular radio network is a powerful system for voice communication systems because radio terminals can be used over a wide range. However, when there are a large number of users and the communication density is high, a capacity problem may occur, so that it cannot sufficiently cope with future large-capacity data transmission. On the other hand, the wireless LAN network has a sufficient capacity with a maximum transmission capacity of 11 Mbps in IEEE802.11b, and a maximum of 54 Mbps in IEEE802.11a and HyperLAN2, which is sufficient for future large-capacity data transmission. However, location management control as in a cellular radio network is insufficient, and it is difficult to use radio terminals over a wide range.
[0004]
A wireless communication system in which different wireless networks represented by a cellular wireless network and a wireless LAN network are integrated has been devised (see, for example, Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-2000825 (page 11, page 12, FIG. 1)
[0006]
[Problems to be solved by the invention]
Incidentally, in order to realize seamless roaming between different wireless networks, it is necessary to centrally manage authentication performed when a wireless terminal accesses each wireless network. However, when centrally managing authentication of the entire wireless network, every time a wireless terminal moves between wireless networks, it is necessary to access a device that performs the centralized management. Therefore, it takes time for authentication and time required for handover. Increases and causes a problem of quality degradation such as packet loss. This problem becomes more pronounced as the number of wireless networks increases and the scale increases.
[0007]
The present invention has been made in view of the above points, and provides a centralized management authentication device and a wireless terminal authentication method capable of reducing the time required for authentication performed when a wireless terminal moves between wireless networks. The purpose is to do.
[0008]
Of the present invention The centralized management authentication apparatus is a centralized management authentication apparatus that centrally manages authentication so that wireless terminals can roam in a plurality of wireless networks each having at least one wireless base station, and each service area of each of the plurality of wireless networks Information and the current location information of the wireless terminal are acquired, and at least one of the communication terminals is provided in the peripheral area of the current location of the wireless terminal based on the acquired service area information and the wireless terminal location information. Authentication information notification destination search means for specifying a wireless network, and at least one wireless network specified by the authentication information notification destination search means only Authentication information management means for notifying the authentication information necessary for authentication of the wireless terminal before the wireless terminal moves The authentication information management means notifies the authentication information every time the wireless terminal accesses each wireless network or at regular intervals. Take the configuration.
[0009]
According to the above configuration, at least one wireless network that provides a communication service around the current position of the wireless terminal is identified based on the current position of the wireless terminal and the service area information of each wireless network, and the identified at least one Before a wireless terminal moves to one wireless network, authentication information used for authentication of the wireless terminal is notified to that network. As a result, the authentication time associated with movement of the wireless terminal within the same wireless LAN network or between different wireless LAN networks can be shortened, and the time required for handover can be shortened, resulting in quality degradation such as packet loss associated with handover. There is nothing.
[0010]
Of the present invention Centralized management authentication device Other aspects of Is In the above configuration, Among the plurality of wireless networks, there is a cellular wireless network having a location management function of the wireless terminal, and the authentication information notification destination search unit obtains current location information of the wireless terminal from the cellular wireless network. The structure to do is taken.
[0011]
According to the above configuration, the cellular wireless network has a function of grasping the current position of the wireless terminal in units of cellular areas, and the authentication information notification destination search means obtains the current position of the wireless terminal by using this function. can do.
[0012]
Of the present invention Centralized management authentication device Other aspects of Is In the above configuration, The authentication information notification destination search means adopts a configuration for acquiring service area information of each wireless network from the cellular wireless network.
[0013]
According to the above configuration, the service area information of each wireless network can be acquired from the cellular wireless network.
[0014]
Of the present invention Centralized management authentication device Other aspects of Is In the above configuration, The authentication information management means is configured to notify the wireless network that has requested authentication information of the authentication information generated by the authentication information generation device of the cellular wireless network.
[0015]
According to the above configuration, by providing authentication information to the wireless network, the wireless terminal can be used for authentication when moving between service areas in the wireless network. Thereby, it is possible to shorten the processing time related to authentication in movement within the same wireless network.
[0016]
Of the present invention Centralized management authentication device Other aspects of Is In the above configuration, The service area information and the wireless terminal location information are managed by a location management device of a cellular radio network, and the authentication information notification destination search unit is managed by the location management device of the cellular radio network. A configuration is adopted in which at least one wireless network providing a communication service in an area around the current position of the wireless terminal is specified based on the area information and the wireless terminal position information.
[0017]
According to the above configuration, at least the communication service is provided in the peripheral area of the current position of the wireless terminal by using the service area information and the wireless terminal position information managed by the position management device of the cellular wireless network. One wireless network can be identified.
[0018]
Of the present invention Cellular wireless network Of the above configuration A configuration including a centralized management authentication device is adopted.
[0019]
According to the above configuration, it is possible to shorten the authentication time associated with the movement of the wireless terminal within the same wireless LAN network or between different wireless LAN networks, and to prevent cellular quality deterioration such as packet loss due to handover between wireless networks. A network can be provided.
[0020]
Of the present invention An authentication apparatus, authentication information holding means for holding authentication information obtained by making an authentication information request to a central management authentication apparatus that centrally manages authentication associated with movement of a wireless terminal to each of a plurality of wireless networks; When the wireless terminal moves between service areas in the wireless network to which it belongs, an authentication unit that uses authentication information held by the authentication information holding unit when authenticating the wireless terminal in the destination service area; The structure which comprises is taken.
[0021]
According to the above configuration, by acquiring authentication information from the centralized management authentication device, it can be used for authentication at a moving destination when a wireless terminal moves between service areas in a wireless network. It is possible to shorten the processing time related to authentication in movement in the network.
[0022]
Of the present invention The wireless terminal includes a receiving unit that receives a signal transmitted from a global positioning system satellite, a current position measuring unit that measures a current position using the received signal from the global positioning system satellite, and the current position measurement A current position information notifying means for notifying the cellular radio network of the current position measured by the means.
[0023]
According to the above configuration, since the cellular wireless network can acquire highly accurate location information, the number of wireless networks to which the authentication information is notified can be narrowed down, and thereby the processing time for notifying the authentication information Can be shortened.
[0024]
Of the present invention The radio base station is a radio base station that constitutes a radio network, and includes a receiving unit that receives a signal transmitted from a global positioning system satellite and a current position using the received signal from the global positioning system satellite. A current position measuring means for measuring the current position, and a current position information notifying means for notifying the cellular radio network of the current position measured by the current position measuring means.
[0025]
According to the above configuration, since the cellular wireless network can acquire highly accurate position information, the number of wireless networks to which the authentication information is notified can be narrowed down, thereby reducing the processing time for notifying the authentication information. Shortening can be achieved.
[0026]
Of the present invention Wireless communication system A centralized management authentication apparatus for centrally managing authentication so that a wireless terminal can roam in a plurality of wireless networks each having at least one wireless base station, the service area information of each of the plurality of wireless networks and the wireless terminal Authentication for identifying at least one wireless network that obtains current location information and that provides communication services in an area around the current location of the wireless terminal based on the acquired service area information and wireless terminal location information Authentication information for notifying authentication information necessary for authentication of the wireless terminal before the wireless terminal moves only to at least one wireless network specified by the information notification destination search means and the authentication information notification destination search means Management means, wherein the authentication information management means is configured such that the wireless terminal is connected to each wireless network. Authentication information holding the authentication information obtained by making an authentication information request to the central management authentication device and the central management authentication device that notifies the authentication information every time the access is made or at regular intervals Authentication using the authentication information held in the authentication information holding means when authenticating the wireless terminal in the destination service area when the wireless terminal moves between the service area and the service area in the wireless network to which it belongs An authentication device comprising: The structure which comprises is taken.
[0027]
According to the above configuration, it is possible to reduce the authentication time associated with movement of wireless terminals within the same wireless LAN network or between different wireless LAN networks, and wireless communication that does not cause quality degradation such as packet loss due to handover between wireless networks. A system can be provided.
[0028]
Of the present invention The certification provider facility is a certification provider facility that manages the entire wireless network, Of the above configuration A configuration including a centralized management authentication device is adopted.
[0029]
According to the above configuration, the authentication business can shorten the authentication time accompanying movement of wireless terminals within the same wireless LAN network or between different wireless LAN networks, and does not cause quality degradation such as packet loss due to handover between wireless networks. Facilities can be provided.
[0030]
Of the present invention Certification company equipment Other aspects of Is In the above configuration, A location management device that manages service area information of each of a plurality of wireless networks and current location information of the wireless terminal is provided, and the location management device is connected to the wireless terminal from a cellular wireless network that manages the location of the wireless terminal. The position information is acquired.
[0031]
According to the above configuration, the cellular wireless network has a function of grasping the current position of the wireless terminal in units of cellular areas, and is wirelessly transmitted from the position management device that manages the current position information of the wireless terminal grasped by this function. The current position information of the terminal can be acquired. Accordingly, the price of the equipment can be kept low because it is not necessary to have a function for acquiring the current location information of the wireless terminal.
[0032]
Of the present invention Wireless communication system A centralized management authentication apparatus for centrally managing authentication so that a wireless terminal can roam in a plurality of wireless networks each having at least one wireless base station, the service area information of each of the plurality of wireless networks and the wireless terminal Authentication for identifying at least one wireless network that obtains current location information and that provides communication services in an area around the current location of the wireless terminal based on the acquired service area information and wireless terminal location information Authentication information for notifying authentication information necessary for authentication of the wireless terminal before the wireless terminal moves only to at least one wireless network specified by the information notification destination search means and the authentication information notification destination search means Management means, wherein the authentication information management means is configured such that the wireless terminal is connected to each wireless network. Authentication facility equipment having a centralized management authentication device that notifies the authentication information every time access is made or at regular intervals, and the authentication information obtained by making an authentication information request to the centralized management authentication device When the wireless terminal moves between the authentication information holding means for holding information and the service area in the wireless network to which it belongs, it is held by the authentication information holding means when authenticating the wireless terminal in the destination service area. An authentication device comprising authentication means using the authentication information, The structure which comprises is taken.
[0033]
According to the above configuration, a wireless communication system that can shorten the time required for authentication performed when wireless terminals move between different wireless networks and does not cause quality degradation such as packet loss due to handover between wireless networks. Can be provided.
[0034]
Of the present invention The wireless terminal authentication method is a wireless terminal authentication method in a wireless communication system including a plurality of wireless networks having at least one wireless base station, and acquires location information of the wireless terminals and each of the plurality of wireless networks. At least one wireless network that acquires service area information and provides a communication service in a peripheral area where the wireless terminal is located based on the acquired location information of the wireless terminal and the service area information of each wireless network The wireless network only The wireless terminal is notified of the authentication information of the wireless terminal before moving to the network. The authentication information is notified every time the wireless terminal accesses each wireless network or at regular intervals. To do.
[0035]
According to the above method, at least one wireless network that provides a communication service around the current position of the wireless terminal is identified based on the current position of the wireless terminal and the service area information of each wireless network, and the identified at least one Before a wireless terminal moves to one wireless network, authentication information used for authentication of the wireless terminal is notified to that network. As a result, the authentication time associated with movement of the wireless terminal within the same wireless LAN network or between different wireless LAN networks can be shortened, and the time required for handover can be shortened, resulting in quality degradation such as packet loss associated with handover. There is nothing.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
The essence of the present invention is that the wireless terminal manages the position information of the wireless terminal and the service area information of each wireless network, and the wireless terminal performs the communication service around the current position of the wireless terminal. By notifying the wireless terminal of authentication information required for authentication before handover, the authentication time associated with the movement of the wireless terminal between different networks is shortened.
[0037]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0038]
(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a radio communication system according to Embodiment 1 of the present invention.
The wireless communication system according to the present embodiment includes one cellular wireless network 1 and a plurality of wireless local area network networks (hereinafter referred to as wireless LAN networks) 2-1, 2-2,. It is a composite of 2-n.
[0039]
The cellular wireless network 1 generates a centralized management authentication device 10 that centrally manages wireless terminal authentication performed in each of the plurality of wireless LAN networks 2-1 to 2-n, and authentication information for managing the wireless terminals. An authentication information generation device 11, a user data management device 12 that manages a contract content of a user such as a roaming contract, a location management device 13 that manages the current location of a wireless terminal, and wireless base stations 14 and 15. Is done. Each of the radio base stations 14 and 15 provides a communication service to a radio terminal that has moved into its service area 3.
[0040]
The location management device 13 performs location management in units of cellular radio areas, and includes a radio terminal location management unit 1301 and a service area management unit 1302, as shown in the block diagram of FIG. The wireless terminal position management unit 1301 manages the current positions of the wireless terminals 30-1 to 30-4. A service area management unit 1302 of the location management device 13 manages service area information of each of the wireless LAN networks 2-1 to 2-n.
[0041]
As shown in the block diagram of FIG. 3, the unified management authentication apparatus 10 includes an authentication information destination search unit 101, an authentication information management unit 102, and an authentication unit 103. The authentication information notification destination search unit 101 searches the wireless LAN network having the service area around the current position of the wireless terminal by acquiring the wireless terminal position information and the service area information managed by the position management device 13. Then, the authentication information management unit 102 is notified of the searched wireless LAN network. The authentication information management unit 102 notifies the authentication information acquired from the authentication information generating device 11 to the wireless LAN network searched by the authentication information notification destination search unit 101. That is, the authentication information management unit 102 notifies the authentication information to the wireless LAN network having a service area around the current location of the wireless terminal.
[0042]
Each of the wireless LAN networks 2-1 to 2-n includes an authentication device 20 and wireless base stations 21 and 22. As shown in the block diagram of FIG. 4, the authentication device 20 includes an authentication information management unit 201 and an authentication unit 202. The authentication information management unit 201 manages the authentication information of the wireless terminal, and manages the authentication information notified from the central management authentication device 10 by requesting the authentication information from the central management authentication device 10 of the cellular wireless network 1. . The authentication unit 202 confirms whether authentication information of the wireless terminal is stored in the authentication information management unit 201 by receiving an authentication request signal from the wireless terminal. If the corresponding authentication information is stored in the authentication information management unit 201, authentication processing is performed according to the authentication algorithm. On the other hand, if the corresponding authentication information is not stored in the authentication information management unit 201, the authentication information management unit 201 sends an authentication information request to the centralized management authentication device 10 of the cellular wireless network 1, and the corresponding authentication information To get.
[0043]
Returning to FIG. 1, each of the wireless base stations 21 and 22 of each of the wireless LAN networks 2-1 to 2-n manages one service area. That is, in the wireless LAN network 2-1, the wireless base station 21 manages the service area 4-1, and the wireless base station 22 manages the service area 4-2. In the wireless LAN network 2-2, the wireless base station 21 manages the service area 4-3, and the wireless base station 22 manages the service area 4-4. In the wireless LAN network 2-i, the wireless base station 21 is in the service area 4-i. 1 The radio base station 22 is in service area 4-i 2 Manage. In the wireless LAN network 2-n, the wireless base station 21 is in the service area 4-n. 1 The radio base station 22 is in service area 4-n 2 Manage.
[0044]
Each of the wireless terminals 30-1 to 30-4 includes two wireless signal transmission / reception units 301 and 302 and an authentication unit 303, as shown in the block diagram of FIG. The radio signal transmission / reception unit 301 communicates with the cellular radio network 1 and performs a process of establishing a radio section with the radio base station 14 or the radio base station 15 of the network 1 when performing communication. On the other hand, the wireless signal transmission / reception unit 302 communicates with the wireless LAN networks 2-1 to 2-n.
[0045]
The authentication unit 303 exchanges authentication information with the authentication unit 103 of the centralized management authentication device 10 of the cellular wireless network 1. The authentication unit 303 has a secret authentication key that is common to the authentication unit 103 of the centralized management authentication apparatus 10, and exchanges authentication information based on the same authentication algorithm using the authentication key. The authentication information is obtained from the authentication information generation device 11 of the cellular radio network 1 and is managed by the authentication information management unit 102 of the unified management authentication device 10.
[0046]
In such a wireless communication system that combines the cellular wireless network 1 and a plurality of wireless LAN networks 2-1 to 2-n, the wireless terminals 30-1 to 30-4 move within the service area of the cellular wireless network 1. In addition, service areas 4-1, 4-2,..., 4-i managed by the wireless base stations 21 and 22 of the wireless LAN networks 2-1 to 2-n. 1 , 4-i 2 ..., 4-n 1 , 4-n 2 Move in.
[0047]
Next, authentication of radio terminals 30-1 to 30-4 in the radio communication system according to the present embodiment will be described. In this description, a case where the wireless terminal 30-1 is authenticated is taken as an example.
[0048]
First, an authentication operation when the power of the wireless terminal 30-1 is changed from the off state to the on state will be described.
When the wireless terminal 30-1 connects to the cellular wireless network 1, the wireless signal transmitting / receiving unit 301 of the wireless terminal 30-1 establishes a wireless section with the wireless base station 14 or the wireless base station 15 of the cellular wireless network 1. After the processing, the authentication signal is exchanged with the centralized management authentication apparatus 10 of the cellular radio network 1 according to the authentication algorithm to perform authentication.
[0049]
On the other hand, the wireless terminal 30-1 is connected to the wireless LAN networks 2-1, 2-2, ..., 2-i, ..., or 2-n (hereinafter, a case of connecting to the wireless LAN network 2-1 as an example). When the wireless signal transmission / reception unit 302 of the wireless terminal 30-1 performs processing for establishing a wireless section with the wireless base station 21 or the wireless base station 22 of the wireless LAN network 2-1, The authentication device 20 of 2-1 is accessed. At this time, the wireless terminal 30-1 sends its own ID (identification information) to inform which wireless terminal is requesting access.
[0050]
In the authentication device 20 of the wireless LAN network 2-1, the authentication unit 202 receives an authentication request signal from the wireless terminal 30-1, and a series of authentication information of the wireless terminal 30-1 is managed by the authentication information management unit 201. Check if it is. If the authentication information is not managed, an authentication information request is sent to the centralized management authentication apparatus 10 of the cellular wireless network 1 to acquire the authentication information of the wireless terminal 30-1. When the authentication information is acquired, authentication signals are exchanged with the wireless terminal 30-1 in accordance with the same authentication algorithm as the authentication of the cellular wireless network 1, and authentication is performed.
[0051]
Next, authentication when the wireless terminal 30-1 moves will be described.
(Authentication associated with movement within the same wireless LAN network)
Even when the wireless terminal 30-1 moves within the same wireless LAN network 2-1, authentication is required every time the service area changes (that is, every time the connected wireless base station changes). This authentication is performed by storing the authentication information acquired from the centralized management authentication device 10 of the cellular wireless network 1 in the authentication device 20 of the wireless LAN network 2-1 when first connected to the wireless LAN network 2-1. The authentication is completed simply by accessing the authentication device 20.
[0052]
That is, when the wireless terminal 30-1 is turned on and accesses the wireless LAN network 2-1 for the first time, the centralized management authentication device 10 of the cellular wireless network 1 passes through the authentication device 20 of the wireless LAN network 2-1. Authentication is performed by accessing the wireless LAN network 2-1, but thereafter, when moving within the same wireless LAN network 2-1, authentication is performed by accessing the authentication device 20 of the wireless LAN network 2-1.
[0053]
(Authentication associated with moving to a different wireless LAN network)
Authentication in the case of moving to a different adjacent wireless LAN network is performed as follows.
First, the current location of the wireless terminal 30-1 is detected by the location management function of the cellular radio network 1 in the cellular radio network 1. The detected current position of the wireless terminal 30-1 is managed by the wireless terminal position management unit 1301 (see FIG. 2) of the position management device 13. The service area management unit 1302 manages the service area information of each of the wireless LAN networks 2-1 to 2-n.
[0054]
In the centralized management authentication device 10 of the cellular wireless network 1, the authentication information notification destination search unit 101 uses the location information of the wireless terminal managed by the location management device 13 of the cellular wireless network 1 and the wireless LAN networks 2-1 to 2-2. n service area information is acquired, and based on these pieces of information, a wireless LAN network having a service area around the current position of the wireless terminal 30-1 is grasped. The recognized wireless LAN network is notified to the authentication information management unit 102. Upon receiving this notification, the authentication information management unit 102 notifies the authentication information to the authentication device 20 of the wireless LAN network having a service area around the current position of the wireless terminal 30-1.
[0055]
Here, for example, when the authentication information is notified to the authentication device 20 of the wireless LAN network 2-2, the authentication information management unit 201 manages the notified authentication information in the authentication device 20 of the network 2-2. Thereby, even when the wireless terminal 30-1 moves to the adjacent wireless LAN network 2-2, the authentication can be completed only by accessing the authentication device 20 in the wireless LAN network 2-2. This makes it possible to shorten the time required for authentication and hence the handover time. Note that the number of wireless LAN networks having a service area around the current position of the wireless terminal 30-1 is not limited to one and may be two or more. In such a case, authentication information is notified to the authentication devices 20 of all the wireless LAN networks.
[0056]
Movement from the service area 3 of the cellular wireless network 1 to a service area of a certain wireless LAN network, or a wireless terminal that is communicating with the wireless terminal via the cellular wireless network 1 is a service of the wireless LAN network existing in the cellular wireless network 1 When entering the area and switching to the wireless LAN network for communication, as well as moving between different wireless LAN networks, the wireless LAN network having the service area around the current location of the wireless terminal is grasped, and the wireless LAN network By notifying the authentication device 20 of authentication information in advance, the time required for authentication can be shortened.
[0057]
Further, when moving from a certain wireless LAN network to the cellular wireless network 1 or moving within the cellular wireless network 1, the authentication unit 303 of the wireless terminal follows a normal authentication sequence performed during the location registration sequence of the cellular wireless network 1. And the authentication unit 103 of the centralized management authentication device 10 of the cellular radio network 1 are authenticated. Of course, when moving between different networks or different business operators, the authentication information is notified after confirming whether roaming is possible. User contract contents such as a roaming contract are stored in the user data management device 12.
[0058]
The notification of the authentication information from the centralized management authentication device 10 to the authentication device 20 of each wireless LAN network 2-1 to 2-n as described above is the first time that the wireless terminal transmits to each wireless LAN network 2-1 to 2-n. This is done only when accessed, but the information once notified is not used semi-permanently. In a wireless LAN network, it is desirable to change the encryption key for a wireless section at regular intervals in order to improve the security of the wireless section. Therefore, it is desirable that the notification from the centralized management authentication apparatus 10 regarding the authentication information including the encryption key of the wireless section is performed every time the wireless terminal accesses each wireless LAN network or at regular intervals.
[0059]
Thus, according to the wireless communication system according to the present embodiment, the location information of the wireless terminal and the service area information of each wireless LAN network 2-1 to 2-n are managed, and the wireless terminal is located around the current location. By notifying the authentication information before moving to the wireless LAN network, the authentication time associated with the movement of the wireless terminal within the same wireless LAN network or between different wireless LAN networks is shortened, and the time required for handover is shortened. Therefore, quality degradation such as packet loss associated with handover does not occur.
[0060]
(Embodiment 2)
FIG. 6 is a block diagram showing a configuration of a radio communication system according to Embodiment 2 of the present invention. In this figure, parts common to those in FIG. 1 described above are denoted by the same reference numerals and description thereof is omitted.
[0061]
In the wireless communication system according to the first embodiment described above, the central management authentication apparatus 10 is installed in the cellular wireless network 1, whereas in the present embodiment, the business for centrally managing authentication of the entire network. It is installed in the person's equipment (referred to here as certification company equipment).
[0062]
In FIG. 6, the cellular radio network 5 includes an authentication device 23, an authentication information generation device 11, a location management device 24, and radio base stations 14 and 15. The authentication provider facility 6 includes a central management authentication device 10, an authentication information generation device 25, a location management device 26, and a user data management device 27. Each of the wireless LAN networks 2-1 to 2-n includes an authentication device 20 and wireless base stations 21 and 22 as in the first embodiment. The authentication device 23 includes an authentication information management unit 2301 and an authentication unit 2302 as shown in the block diagram of FIG. As shown in the block diagram of FIG. 8, the position management device 24 includes a wireless terminal position management unit 2401 that manages the position of the wireless terminal.
[0063]
Next, authentication of a wireless terminal in the wireless communication system according to the present embodiment will be described. In this description, a case where the wireless terminal 30-1 is authenticated is taken as an example.
First, authentication when the wireless terminal 30-1 is turned on from the power-off state and connected to the network will be described.
[0064]
When the wireless terminal 30-1 connects to the cellular wireless network 5, the wireless base station 14 or the wireless base station 15 of the cellular wireless network 5 is connected to the wireless signal transmitting / receiving unit 301 (see FIG. 5) for connecting to the cellular wireless network 5. Then, the authentication information is exchanged with the authentication device 23 (see FIG. 7) installed in the cellular wireless network 5. In this authentication, the same authentication procedure as in the first embodiment is performed.
[0065]
On the other hand, when the wireless terminal 30-1 connects to the wireless LAN network 2-1, the wireless signal transmission / reception unit 302 (see FIG. 4) for connecting to the wireless LAN network 2-1 wirelessly connects to the wireless LAN network 2-1. After performing processing for establishing a wireless section with the base station 21 or the wireless base station 22, the authentication device 20 of the wireless LAN network 2-1 is accessed. At this time, the wireless terminal 30-1 sends its own ID to inform which wireless terminal is requesting access.
[0066]
As shown in the block diagram of FIG. 4, the authentication device 20 receives an authentication request signal at the authentication unit 202, and a series of authentication information of the wireless terminal 30-1 that has issued the authentication request is stored in the authentication information management unit 201. Check if it is. If it is not stored, an authentication information request is sent to the central management authentication apparatus 10 in the authentication provider facility 6 to acquire authentication information and perform authentication. Here, the authentication algorithm is performed using an algorithm standardized in the wireless LAN system (for example, IEEE 802.1X).
[0067]
In the present embodiment, a unique authentication algorithm can be used for access to the cellular wireless network 5 and access to the wireless LAN networks 2-1 to 2-n. Of course, the same authentication algorithm is used for the cellular wireless network 5 and the wireless LAN networks 2-1 to 2-n, the authentication information is collectively managed by the authentication service provider, and the centralized management authentication apparatus 10 manages the cellular wireless network 5. A form of notifying the authentication device 23 is also possible.
[0068]
Next, authentication when the wireless terminal 30-1 moves will be described.
First, even when moving within the same wireless LAN network, authentication for connection is required every time the service area changes (that is, every time the connected wireless base station changes). As in the first embodiment, this authentication is performed by holding the authentication information acquired from the centralized management authentication device 10 in the authentication device 20 when connecting to the wireless LAN network for the first time, and accessing only the authentication device 20. Complete authentication. That is, when the power is turned on and the wireless LAN network is accessed for the first time, the centralized management authentication device 10 is accessed through the authentication device 20 of the wireless LAN network, and thereafter the same wireless LAN network is accessed. Access to the authentication device 20 is performed during the movement within.
[0069]
On the other hand, for authentication when moving to a different adjacent wireless LAN network, the current location of the wireless terminal is acquired using the location management function in units of cellular areas provided in the cellular wireless network 5. That is, the current position of the wireless terminal is acquired from the position management device 24 of the cellular wireless network 5. And it manages with the location management apparatus 26 of the certification | authentication provider equipment 6 with the service area information of each wireless LAN network 2-1 to 2-n.
[0070]
In the centralized management authentication device 10, the authentication information notification destination search unit 101 (see FIG. 3) acquires the location information of the wireless terminal and the service area information of each wireless LAN network 2-1 to 2-n from the location management device 26, Based on these pieces of information, the wireless LAN network having the service area around the current position of the wireless terminal is grasped. Then, the recognized wireless LAN network is notified to the authentication information management unit 102 (see FIG. 3). The authentication information management unit 102 notifies the authentication information to the authentication device 20 of the wireless LAN network to be notified. The authentication device 20 stores the notified authentication information. As a result, even when a wireless terminal moves to an adjacent wireless LAN network, the authentication can be completed simply by accessing the authentication device 20 in the wireless LAN network, and the time required for authentication and hence the handover time can be shortened. Is possible.
[0071]
In addition, the wireless terminal moves from the service area 3 of the cellular wireless network 5 to the service area of a wireless LAN network, or the wireless LAN network in which the wireless terminal communicating via the cellular wireless network 5 exists in the cellular wireless network 5. When entering a service area and switching to a wireless LAN network for communication, as with movement between different wireless LAN networks, the wireless LAN network having the service area around the current position of the wireless terminal is grasped, and the wireless LAN By notifying authentication information to the network authentication apparatus in advance, it is possible to reduce the time required for authentication and hence the handover time.
[0072]
Further, in the movement from the wireless LAN network to the cellular wireless network and the movement in the cellular wireless network, the authentication unit of the wireless terminal and the centralized management authentication device according to a normal authentication sequence performed at the time of the location registration sequence of the cellular wireless network Authentication is performed between the authentication units. Of course, when moving between different networks or different operators, authentication information is notified after confirming whether or not they are compatible with each other. The contents of the user contract such as the roaming contract are stored in the user data management device 27.
[0073]
The notification of authentication information from the unified management authentication apparatus 10 to the authentication apparatuses 20 of the wireless LAN networks 2-1 to 2-n as described above is not only when the wireless terminal accesses each wireless LAN network for the first time. In a wireless LAN network, it is desired to change the encryption key for a wireless section at regular intervals in order to improve the security of the wireless section. Therefore, it is desirable that the notification from the centralized management authentication apparatus 10 regarding the authentication information including the encryption key of the wireless section is performed every time the wireless terminal accesses each wireless network, or at regular intervals.
[0074]
As described above, according to the wireless communication system according to the present embodiment, the central management device 10 of the wireless communication system according to the embodiment is installed in the operator equipment that centrally manages the authentication of the entire network. As a result, the authentication time associated with movement of the wireless terminal within the same wireless LAN network or between different wireless LAN networks is shortened, and the time required for handover can be shortened, resulting in quality degradation such as packet loss associated with handover. There is no.
[0075]
(Embodiment 3)
As shown in the block diagram of FIG. 9, the wireless communication system according to Embodiment 3 of the present invention includes a position detection unit 401 using GPS (Global Positioning System) in the wireless terminal 40, and the wireless terminal 40 is always present. The location is notified to the location management device 13 of the cellular radio network 1.
[0076]
In the radio communication systems of the first and second embodiments described above, the location management function of the cellular radio networks 1 and 5 used for the location information of the radio terminals 30-1 to 30-4 is an area unit of the cellular radio network. The accuracy reaches several kilometers. On the other hand, the position detection unit 401 using GPS has an accuracy of several tens of meters or less, and can detect the position of the wireless terminal with high accuracy. As a result, it is possible to narrow down the wireless LAN network having the service area around the current position of the wireless terminal, thereby reducing the number of wireless LAN networks that notify the authentication information and hence the traffic of the control signal such as the authentication information in the entire network. be able to.
[0077]
(Embodiment 4)
The wireless communication system according to Embodiment 4 of the present invention includes a position detection unit (not shown) such as a GPS in the wireless base station 21 or 22 of each wireless LAN network 2-1 to 2 -n, and each wireless LAN network. The service areas 2-1 to 2-n are notified to the location management device 13 and updated as needed. As a result, the latest information associated with the expansion of the service area accompanying the expansion of the wireless base stations of the wireless LAN networks 2-1 to 2-n can be updated, and can be reflected in the prior notification of authentication information.
[0078]
【The invention's effect】
As described above, according to the present invention, the location information of the wireless terminal and the service area information of each wireless network are managed, and the authentication information is notified in advance before the wireless terminal moves to the wireless network around the current location. As a result, the authentication time associated with the movement of wireless terminals within the same wireless network or between different wireless networks can be shortened to reduce the time required for handover, resulting in quality degradation such as packet loss associated with handover. Will not occur.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of a wireless communication system according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a schematic configuration of a location management device provided in the cellular radio network that constitutes the radio communication system according to the first embodiment of the present invention.
FIG. 3 is a block diagram showing a schematic configuration of a centralized management authentication apparatus provided in a cellular radio network constituting the radio communication system according to Embodiment 1 of the present invention.
FIG. 4 is a block diagram showing a schematic configuration of an authentication apparatus provided in a wireless LAN network constituting the wireless communication system according to the first embodiment of the present invention.
FIG. 5 is a block diagram showing a schematic configuration of a radio terminal that can be used in the radio communication system according to Embodiment 1 of the present invention;
FIG. 6 is a block diagram showing an overall configuration of a radio communication system according to Embodiment 2 of the present invention.
FIG. 7 is a block diagram showing a schematic configuration of an authentication apparatus provided in a cellular radio network constituting the radio communication system according to the second embodiment of the present invention.
FIG. 8 is a block diagram showing a schematic configuration of a location management apparatus provided in a cellular radio network constituting the radio communication system according to the second embodiment of the present invention.
FIG. 9 is a block diagram showing a schematic configuration of a radio terminal that can be used in the radio communication system according to the third embodiment of the present invention.
[Explanation of symbols]
1, 5 cellular wireless network
2-1, 2-2, 2-i, 2-n Wireless LAN network
3 Cellular radio area
4-1, 4-2, 4-3, 4-4, 4-i 1 , 4-i 2 , 4-n 1 , 4-n 2 service area
6 certification company facilities
10 Centralized management authentication device
11, 25 Authentication information generator
12, 27 User data management device
13, 24, 26 Position management device
14, 15, 21, 22 Radio base station
20, 23 Authentication device
30-1, 30-2, 30-3, 30-4, 40 Wireless terminal
101 Authentication information notification destination search unit
102, 201, 2301 Authentication information management unit
103, 202, 303, 2302 Authentication unit
301, 302, 402 Radio signal transmitter / receiver
401 Position detection unit
1301 Wireless terminal location management unit
1302 Service Area Management Department
2401 Wireless terminal location management unit

Claims (11)

  1. A centralized management authentication apparatus for centrally managing authentication so that a wireless terminal can roam in a plurality of wireless networks each having at least one wireless base station, the service area information of each of the plurality of wireless networks and the wireless terminal Authentication for identifying at least one wireless network that obtains current location information and that provides communication services in an area around the current location of the wireless terminal based on the acquired service area information and wireless terminal location information Authentication information for notifying authentication information necessary for authentication of the wireless terminal before the wireless terminal moves only to at least one of the wireless networks specified by the information notification destination search means and the authentication information notification destination search means A management means ,
    The centralized authentication apparatus characterized in that the authentication information management means notifies the authentication information every time the wireless terminal accesses each wireless network or at regular intervals .
  2.   Among the plurality of wireless networks, there is a cellular wireless network having a location management function of the wireless terminal, and the authentication information notification destination search unit obtains current location information of the wireless terminal from the cellular wireless network. The unified management authentication apparatus according to claim 1, wherein:
  3.   3. The centralized management authentication apparatus according to claim 2, wherein the authentication information notification destination search unit acquires service area information of each wireless network from the cellular wireless network.
  4.   The authentication information management means notifies the authentication information generated by the authentication information generating device of the cellular wireless network to the wireless network that has requested the authentication information. The unified management authentication device according to the above.
  5.   The service area information and the wireless terminal location information are managed by a location management device of a cellular radio network, and the authentication information notification destination search unit is managed by the location management device of the cellular radio network. 5. The wireless network according to claim 2, wherein at least one wireless network providing a communication service in an area around the current position of the wireless terminal is specified based on the area information and the wireless terminal position information. The unified management authentication device according to the above.
  6.   A cellular radio network comprising the centralized management authentication device according to claim 1.
  7. A centralized management authentication apparatus for centrally managing authentication so that a wireless terminal can roam in a plurality of wireless networks each having at least one wireless base station, the service area information of each of the plurality of wireless networks and the wireless terminal Authentication for identifying at least one wireless network that obtains current location information and that provides communication services in an area around the current location of the wireless terminal based on the acquired service area information and wireless terminal location information Authentication information for notifying authentication information necessary for authentication of the wireless terminal before the wireless terminal moves only to at least one wireless network specified by the information notification destination search means and the authentication information notification destination search means Management means, wherein the authentication information management means is configured such that the wireless terminal is connected to each wireless network. A centralized authentication device to notify the authentication information for each of access, or for each predetermined interval to,
    When the wireless terminal moves between an authentication information holding unit that holds the authentication information obtained by making an authentication information request to the centralized management authentication device and a service area in the wireless network to which the unit belongs, An authentication unit that uses authentication information held by the authentication information holding unit when authenticating the wireless terminal in a previous service area; and
    A wireless communication system comprising:
  8.   6. Authentication facility equipment for managing an entire wireless network, comprising the centralized management authentication device according to any one of claims 1 to 5.
  9. A location management device that manages service area information of each of the plurality of wireless networks and current location information of the wireless terminal, and the location management device includes a wireless terminal from a cellular wireless network that performs location management of the wireless terminal; The location information of the certification business facility according to claim 8 is acquired.
  10. A centralized management authentication apparatus for centrally managing authentication so that a wireless terminal can roam in a plurality of wireless networks each having at least one wireless base station, the service area information of each of the plurality of wireless networks and the wireless terminal Authentication for identifying at least one wireless network that obtains current location information and that provides communication services in an area around the current location of the wireless terminal based on the acquired service area information and wireless terminal location information Authentication information for notifying authentication information necessary for authentication of the wireless terminal before the wireless terminal moves only to at least one wireless network specified by the information notification destination search means and the authentication information notification destination search means Management means, wherein the authentication information management means is configured such that the wireless terminal is connected to each wireless network. Authentication carrier equipment comprising for each accessing, or centralized authentication device to notify the authentication information for each predetermined interval to,
    When the wireless terminal moves between an authentication information holding unit that holds the authentication information obtained by making an authentication information request to the centralized management authentication device and a service area in the wireless network to which the unit belongs, An authentication unit that uses authentication information held by the authentication information holding unit when authenticating the wireless terminal in a previous service area; and
    A wireless communication system comprising:
  11. A wireless terminal authentication method in a wireless communication system including a plurality of wireless networks having at least one wireless base station, wherein the wireless terminal authentication method acquires location information of the wireless terminals and acquires service area information of each of the plurality of wireless networks. , Based on the acquired location information of the wireless terminal and the service area information of each wireless network, and grasped and grasped at least one wireless network providing communication service in the peripheral area where the wireless terminal is located Only the wireless network is notified of the authentication information of the wireless terminal before the wireless terminal moves to the network, and the authentication information is sent every time the wireless terminal accesses each wireless network or at regular intervals. A wireless terminal authentication method characterized by notifying .
JP2003022039A 2003-01-30 2003-01-30 Centralized management authentication apparatus and wireless terminal authentication method Expired - Fee Related JP3854930B2 (en)

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JP2003022039A JP3854930B2 (en) 2003-01-30 2003-01-30 Centralized management authentication apparatus and wireless terminal authentication method
CNA2004800028942A CN1742511A (en) 2003-01-30 2004-01-13 Unitary management authentication device
EP04701669A EP1589777A1 (en) 2003-01-30 2004-01-13 Unitary management authentication device
US10/544,170 US20060135124A1 (en) 2003-01-30 2004-01-13 Unitary management authentication device
PCT/JP2004/000136 WO2004068887A1 (en) 2003-01-30 2004-01-13 Unitary management authentication device
KR1020057012367A KR20050098850A (en) 2003-01-30 2004-01-13 Unitary management authentication device

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WO2004068887A1 (en) 2004-08-12
US20060135124A1 (en) 2006-06-22

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